# Perimeter and Area of Triangles

## LET'S START WITH PERIMETER!

*Remember that perimeter is the distance AROUND a shape!

*

*

__Follow the 4 steps to find the perimeter of a triangle__:- Plot your points on the coordinate plane
- Count the distance of the two legs.
- Use the Pythagorean Theorem to find the hypotenuse.
- Add all sides.

## EXAMPLE

Find the PERIMETER of the triangle using the following coordinates:

A (-4, -3)

B (2, -3)

C (2, 5)

A (-4, -3)

B (2, -3)

C (2, 5)

## NOW LET'S TAKE A LOOK AT AREA!

*Remember that area is the amount of space INSIDE a shape!

*

*

__Follow the 4 steps to find the area of a triangle__:- Plot your points on the coordinate plane
- Count the distance of the two legs.
- Multiply the two distances.
- Divide by two.

*Remember that units will always be squared!

## EXAMPLE

Find the AREA of the triangle using the following coordinates:

A (-4, -3)

B (2, -3)

C (2, 5)

A (-4, -3)

B (2, -3)

C (2, 5)

## YOUR TURN!

Find the PERIMETER and the AREA of the triangle using the following coordinates:

A (0, 2)

B (4, 2)

C (4, -1)

A (0, 2)

B (4, 2)

C (4, -1)